« previous next »
« previous next »
 

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Parts of the ear Parts of the ear
History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar
Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of Mechanical ventilation. The photograph shows a patient receiving breathing assistance by the use of
This January 1937 photo from Sneedville, Tennessee, shows Eunice Johns, age 9, and her husband, ... This January 1937 photo from Sneedville, Tennessee, shows Eunice Johns, age 9, and her husband, ...
The upper panel shows that scores of four diverse samples of boys on a moral reasoning test show a ... The upper panel shows that scores of four diverse samples of boys on a moral reasoning test show a ...
Parts of a typical spark plug. Parts of a typical spark plug.
Video: Four Giant Convection Cells oF Earth

For a complete list of videos, visit our video library